Caster



C. R. P. GARDNER AND H. PARKER. CASTER. APPLICATION FILED MAY 26- 1921.

1,386,250. Pate ted A g. 2,1921.

UNITED STATES PATENT OFFICE.

CYRIL ROBERT PRESTON GARDNER AND HAROLD PARKER, OF LONDON, ENGLAND.

CASTER.

Application filed May 26, 1921.

To all mm it may concern.

Be it known that we, CYRIL ROBERT Pnns- TON GARDNER, of 4: MelcombeCourt, Dorset Square, N. l/V. 1, London, England, and HAROLD PARKER, of26 Charing Cross road, London, England, both subjects or" the King ofGreat Britain and Ireland, have invented certain new and usefulImprovements in or Relating to Casters, of which the following is aspecification.

This invention relates to casters of the type in which the casing orbody is provided with an upper socket or other means by which it issecured to a leg of'a table or chair and having a small socket to holdan anti friction ball and a lower or bottom socket to hold a casterball; the lower edge of the bottom socket extending below the center ofthe ball and pressed inward to retain the ball in position.

In casters of this type as hitherto constructed the casing has been madein one piece and the edge of the bottom socket has been provided withtransverse saw cuts to enable it to be pressed in to retain the casterball.

The object of this invention is to provide an improved socket 01 thistype.

According to this invention the casing is made from stampings in twoparts, a hollow extension on one part passing through a hole in theother part and secured thereto by beingturned over and pressed down, atthe same time forming a seating for the small Specification of LettersPatent.

the attachment member Patented Aug. 2, 1921.

Serial No. 472,648.

inner ball, the point of contact between the small ball and the cup thusformed being reduced to a minimum, the lower edge of the casing beingbent inward to retain the caster ball.

The drawings tiled herewith are sections of two forms of casters made inaccordance with this invention.

Inv Figure l a is a socket member, 6 the attachment member, 0 anextension on one member which passes through a hole in the other memberand is pressed down forming a seat for the antifriction ball d, thecaster ball 0 bears against the ball (Z and held in position by thelower edge of the socket a which is turned over.

In Fig. 2 the attachment member 6' is in the form of a plate.

What we claim and Letters Patent is A caster comprising a socket memberand an attachment member, means for securing and the socket member by anextension 011 the one passing through a hole in the other, saidconnection forming a ball seat, an antifriction ball adapted to rest onsaid seat and a caster ball adapted to bear on the antifriction ball andto be retained in said socket member.

In testimony whereof we have signed our names to this specification.

desire to secure by CYRIL ROBERT PRESTON GARDNER. HAROLD PARKER.

